Rolling stock disc brake

FIELD: transport.

SUBSTANCE: invention relates to rolling stock brake systems. Disc brake comprises friction unit. Friction unit is composed of radial double-row thrust bearing with medium ring making the brake disc rigidly fitted on mounted axle while two thrust rings make linings. Said linings are pressed to medium ring by levers coupled with brake cylinder. Outer surface of medium ring and inner surfaces of thrust rings have taper grooves to accommodate the balls.

EFFECT: reduced thermal load and wear of disc brake friction pair.

4 dwg

 

The invention relates to braking systems rolling stock of railway transport.

Known disc brakes passenger cars Pioneer III (Psarisomus. The brake equipment of high-speed trains. - M.: Railway transport, No. 2. 2011. - P.72-77.), includes brake discs, brake pads, brake cylinders, shoes.

The disadvantages of the known disc brakes are releasing considerable heat during braking and intensive wear of friction pairs.

The closest to the technical nature of the present device is a disk brake of passenger cars (Whichelow, DSC (in. Automatic brakes rolling stock. - M.: Transport, 1983. - S-219.), includes brake discs, brake cylinders, brake pads, shoes.

The disadvantages of this device are the evolution of considerable heat during braking and intensive wear of friction pairs.

The aim of the invention is the reduction of thermal load, as well as wear of the friction pair of disc brakes.

This goal is achieved by the fact that the friction unit disc brakes made in the form of a radial thrust bearing.

The invention consists in that the friction block is made in the form of a double-row radial thrust plain is a, the average ring which serves as the brake disc and rigidly attached to the axis of the wheelset and the two support rings of the bearing - plates, pressed against the middle ring through the levers brake cylinder, on the outer surface of the middle ring and the inner surfaces of the support rings are made of a groove with a conical profile to accommodate the balls.

In figure 1, 2 presents the scheme of the disk brake Assembly and the cross-section of the friction block, figure 3, 4 - a scheme of braking forces in the proposed device.

Figure 1 presents the scheme of the pair of wheels with the proposed braking device comprising a rail 10, the wheel pair 9, the axis of the wheel pair 4, the pads 2 in the form of a support ring connected to the brake cylinder 6 through the levers 5, anchor hinges 7, gear hinges 8.

Figure 2 presents the scheme of the disk brake, which implements the braking force in chaining mode, which contains the brake disk 1, the plates 2, balls 3, the brake disk 1 is attached to the axis 4 of the pair of wheels 9, the pads 2 are connected gear hinges 8 of the levers 5, which are affected by the brake cylinder 6 via the supporting hinges 7, the brake disk 1, the two pads 2 and the balls 3 in the collection form a friction block in the form of a thrust bearing.

Figure 3 presents the layout of the balls between the middle ring and the support rings, tereasa the brake disk 1, lining 2, the balls 3 are placed in the grooves 11 with a conical profile.

Figure 4 presents the scheme of realization of the braking force of the disk brake in chaining mode.

The present invention operates as follows.

In the absence of compressed air in the brake cylinder 6 of the plates 2 is not pressed to the brake disk 1 and the balls 3 are in a free state.

When compressed air in the brake cylinder 6 levers 5 transmit the force on the bearing, and when the carriage move the balls 3 are rotated with slippage under radial loads.

The pressing plates 2 to the brake disk 1, the normal force F is balanced by the radial reactions N k points of contact of the balls with the grooves 11 (Fig 3), the center O1ball, located on the center axis of the wheel pair O2at a distance R, the rotation speed V (figure 4), the upper contact point of the k0is located in the zone of rotation of the pads with velocity V0and the lowest point of the k0- in the area of rotation with velocity V0. Rotation points one by one rolling circle of diameter d with different velocities it is impossible, therefore, at the points k0and k0is slippage at the speed ΔV=V0-V0while the relative slips ε will be determined from the expression ε=ΔV/V=d/R.

Slippage of the balls in the zones of contact resistivity is sozdaetsya friction, which forms a braking force in chaining mode, causing the external reaction FSPbetween the wheel 9 and the rail 10 (figure 1).

The parameters of the structural design of the proposed disc brakes are set by the radius R and the rate of taper of the groove, the diameter and number of balls. The dimensions of the disk brake in the form of a double row thrust bearing and a sufficient number of bulbs double contact them on each side will provide the necessary braking force and managing the value of the pressure in the brake cylinder. The choice of relative slippage ε is calculated on the basis of the intensity of wear of the friction components.

Feature of the offered disc brakes is a minor stroke of the brake cylinder, the magnitude of which is determined only by the elastic deformation, resulting in sharply reduced compressed air consumption and eliminates the need for special lifting devices.

Thus, the proposed disc brake rolling stock can reduce thermal load and the wear of friction pairs through the use of balls placed between the pads and the brake disc and providing the contact at four points, not surfaces.

Disc brake rolling stock containing frictio the economic unit in the form of a brake disk, mounted on the axis of the wheelset and brake pads, pressed against the disk through the levers brake cylinder, characterized in that the friction block is made in the form of radial double row thrust bearing, middle ring which serves as the brake disc and rigidly attached to the axis of the wheelset and the two support rings of the bearing - plates, pressed against the middle ring through the levers brake cylinder, on the outer surface of the middle ring and the inner surfaces of the support rings are made of a groove with a conical profile to accommodate the balls.



 

Same patents:

FIELD: transport.

SUBSTANCE: proposed disk brake block comprises two flanges with appropriate friction linings to allow friction against disk. Said flanges are articulated on ends of two levers driven by brake force source that comprises first piston displacing along first axis A. Brake block comprises also assembly to automatically control the gap between friction linings and said disk. First piston transmits braking force to pusher arranged inside aforesaid source to increase and transmit said force via said assembly and, along second axis B perpendicular to said first axis A, to ends of said levers perpendicular to those where said flanges are articulated with.

EFFECT: higher operating performances.

12 cl, 7 dwg

Disk brake // 2331804

FIELD: engines and pumps.

SUBSTANCE: disk brake comprises a housing with a cramp enveloping the disk brake, a leader coupled with the brake lever, two blocks with friction linings and a nut set up to reciprocate. The leader coupled with the brake lever is furnished with an additional opposite-direction threaded section. The nut is coupled with the leader additional section connected to the brake lever. The movable block is fixed on the nut. The cramp is arranged on the housing to move parallel to the disk rotation axis. The housing is made up of two segments rigidly interconnected and enveloping the brake disk. Note that every segment is furnished with a hole, corresponding to the shape of blocks with linings, to accommodate the latter to move parallel to the disk rotation axis. The leader coupled with the brake lever is made up of a cylinder and a shaft with a larger and smaller diameter opposite-direction outer threads. The space between the cylinder with the thread and the shaft with the opposite thread direction accommodates an inner thread nut coupled with the leader shaft linked with the brake lever, its cylinder being in contact with the cramp inner thread.

EFFECT: longer life, higher efficiency and lower steel intensity of the brake.

5 cl, 1 dwg

FIELD: transport mechanical engineering.

SUBSTANCE: disc brake can be used in wheel brake systems of transportation vehicles with automatic compensation of wear of contact surfaces of shoes and disc. Disc brake has disc with shoes, hydraulic cylinder with sealing ring and piston, which piston interacts with one shoe and which connected cinematically with parking brake drive by means of rod mounted coaxially in cavity of piston. Disc brake also has balls disposed uniformly along circle of piston. Balls are placed into separator for interaction with cone-shaped surface made outside rod and with internal surface of piston; the surfaces form wedge-shaped space. Separator is made for longitudinal movement along rod and it is compressed motionlessness against glass with cup, which glass is fixed in case of hydraulic cylinder. There is clamping spring in the cup. Glass with cup is mounted in cavity made at end of rod.

EFFECT: simplified design; reduced labor input; improved reliability operation; reduced pressure losses of brake fluid.

7 cl, 6 dwg

The invention relates to drum brakes for vehicles, and is intended to compensate for wear of the brake linings on drum brakes

The invention relates to the automotive industry and can be used in drum brake systems of vehicles

The invention relates to the field of engineering, namely to the disk brakes of vehicles, equipped with a mechanical drive

Drum brake // 2104421
The invention relates to a drum brake mechanism, including:

- brake shield;

first and second arcuate brake Shoe having respectively first and second ends facing each other;

- Rethimno mechanism, mounted on the brake shield and driven for expanding the first ends of the two pads;

- adjusting mechanism, the length of which regulate the screw element and which holds the second ends of the two brake pads at a certain distance from each other;

and adjusting means for changing the length of the adjusting mechanism depending on the wear of the pads, consisting of a toothed wheel connected to the screw element, the balancer with ratchet, swivel mounted on the second block, and is able to rotate the toothed wheel in the direction that allows you to increase the length of the adjusting mechanism, and linkage to actuate rocker and linkage, in turn, consists of a lever, re-attached at a point on the second pad, and two rods connected to this lever, and the first end of the first traction swivel mounted on the anchor point, and the second end of the chief the first end of the second TTI swivel mounted on the lever, and the second end of the swivel mounted on the balancer so as to pass on the last movement of the lever

FIELD: machine building.

SUBSTANCE: proposed device comprises two levers arranged on opposed outer surfaces of casing and system of seals. Brake caliper levers are driven eccentrically by crank. Crank is fitted on eccentric shaft end side. Seal between casing and lever represents tight seal and comprises partially elastic bellow secured to case on one side, and, on opposite side, to brake caliper lever.

EFFECT: improved operating performances.

10 cl, 3 dwg

FIELD: transport.

SUBSTANCE: lifting machine comprises motor to drive lifting machine shaft 14. Machine brake 20 applies braking force to disc 22 coupled with machine shaft 14 to decelerate or stop said shaft. In compliance with one version, brake 20 actuates shifting element 38 to apply shifting pressure to tong-type braking mechanism to apply braking force to disc 22. Brake drive 48 with deformable material displaces to counteract shifting pressure to control adhesion between braking mechanism 32 and disc 22. Controller varies braking force applied to disc 22 to control input force on said deformable material. Position of braking element relative to rotary part is defined using material input signal magnitude.

EFFECT: higher operating performances.

19 cl, 5 dwg

FIELD: transport.

SUBSTANCE: invention relates to machine building and may be used in automotive brake systems. Proposed device comprises moving coupling member. The latter is filled with hydraulic fluid to press brake clamp to braking surface. Said moving coupling member is connected with brake actuator to create pressure force introduced via coupling member into brake clamp. Brake clamp is connected via connectors with pressure pickup arranged on vehicle body and comprises thrust cylinder filled with hydraulic fluid interacting with thrust piston. Said cylinder is communicated hydraulic lines with brake actuator. Said cylinder is divided by thrust piston into thrust chamber and thrust discharge chamber. There are adjusting appliances to set braking force subject to preset magnitude by adjusting pressure difference between hydraulic pressure in thrust chamber and hydraulic pressure in thrust discharge chamber.

EFFECT: controlled braking irrespective of actuating force.

18 cl, 2 dwg

FIELD: transport.

SUBSTANCE: invention relates to machine building and may be used in automotive brake systems. Proposed device comprises guided connecting element, braking cylinder, braking piston, hydraulic pipeline and emergent braking means. Said guiding connecting element serves to press brake clamp lining against braking surface. Braking piston is coupled with connecting element. Hydraulic pipeline is communicated with braking cylinder. Emergent braking means driven by fluid medium and manually serve to communicate braking cylinder with hydraulic pipeline or pipelines. Emergent braking means comprise braking valve, mechanical and hydraulic transducers.

EFFECT: reliable braking.

18 cl, 2 dwg

FIELD: transport.

SUBSTANCE: proposed disk brake block comprises two flanges with appropriate friction linings to allow friction against disk. Said flanges are articulated on ends of two levers driven by brake force source that comprises first piston displacing along first axis A. Brake block comprises also assembly to automatically control the gap between friction linings and said disk. First piston transmits braking force to pusher arranged inside aforesaid source to increase and transmit said force via said assembly and, along second axis B perpendicular to said first axis A, to ends of said levers perpendicular to those where said flanges are articulated with.

EFFECT: higher operating performances.

12 cl, 7 dwg

FIELD: transport.

SUBSTANCE: invention relates to machine building, particularly, to braking equipment and may be used at transport facilities. Proposed electromechanical brake comprises brae shoes, case accommodating cup with spring coupled with motor. Said cup houses one or several springs arranged to get unclamped when acted on by electromagnetically controlled latches. Cup allows controlling its translation and is coupled with motor via toothed-surface tie rod, gear wheel coupled with tie rod, electromagnetic coupling and self-braking screw gear. Note here that latch control electromagnets, electromagnetic coupling and motor are connected with control unit connected, in its turn, with brake pickup and that indicating force exerted by cup on shoes.

EFFECT: fast operation at controlled and regulated braking force.

1 dwg

FIELD: machine building.

SUBSTANCE: drive consists of cylinder, of piston installed in cylinder, of fixing device in form of conic bushing with conic insertions arranged inside piston cavity, of un-breaking device in form of an elastic element installed between conic bushing and thrust ring movably positioned on cylinder guide, rigidly tied with cylinder, and of device for retracting piston into initial position. The elastic element of the un-breaking device is made as a compression spring. The thrust ring corresponds to press-on bush with radial orifices. The conic bushing of the fixing device is installed with a minimum clearance relative to end surface made inside the piston; the clearance ensures transfer of force of the compression spring to conic insertions. The conic insertions are movably installed in radial slots of the press-on bush and generate friction force along a cylinder guide deliberately overcoming force of the compression spring.

EFFECT: reduced axial dimensions of drive and expanded functionally of brake drive due to its application in brake systems regardless from pressure value in drain lines.

2 dwg

FIELD: machine building.

SUBSTANCE: drive mechanism of disk brake of vehicle includes bracket consisting of case and cover, brake drive shaft and screw gear installed in bracket, and also lever mounted on external side of bracket on brake drive shaft. A mechanism of automatic control of the brake including a driving link is installed inside the lever. The driving link of automatic control of the brake is arranged coaxially to the brake drive shaft and is kinematically coupled with the bracket. A movable in circumferential direction packing is positioned between the bracket and a controller of the drive lever so, that internal cavities of the bracket and the lever form a common cavity sealed from the side opposite to the bracket.

EFFECT: simplification of design, raised maintainability and service life of mechanism of vehicle dick brake drive.

1 dwg

FIELD: transport.

SUBSTANCE: invention relates to cam-driven block brakes and their components. Cam (38) has one or several ledges (62, 64) with multiple sections (62A-C, 64A-C) that feature various profiles in axial cross section. Varying the cam profile allows producing the cam with the extreme outer ends or apexes of the ledges with length exceeding that of common cams, the mechanical strength being preserved. Increased travel of brake shoes allows using brake shoe lining of increased thickness.

EFFECT: longer life of brake shoe linings.

45 cl, 11 dwg

FIELD: transportation.

SUBSTANCE: disk brake comprises disk-stabilising elements, which are installed between every brake disk and hub or part joined to hub, without fixation and are arranged and installed with the possibility of deviation in axial direction in process of braking and creation of force that provides for axial return of brake disks in case of brakes release. Disk-stabilising element may have rectangular shape mainly, with two long sides and two short sides, by means of which short sides are installed in gaps between teeth or splines in brake disk. Disk-stabilising element may have two free lower ends, which are engaged with top of two adjacent splines or teeth of braking disk, and one upper bent end, which is engaged with base between two adjacent splines or teeth of braking disk. Disk-stabilising element may include helical spring, which is installed in braking disk gap, therefore both ends of helical spring pass radially from helical spring in opposite directions and end with brackets. Disk-stabilising element may be made of metal sheet having shape of "П"-shaped double-sided contour element with two branches, which are joined by base.

EFFECT: improved technical characteristics of disk brake, elimination of noise and jamming and exclusion of disk incline, by means of its stabilisation with the help of disk-stabilising elements.

44 cl, 42 dwg

FIELD: transport.

SUBSTANCE: proposed device comprises body, brake support, brake support levers, system of bearings and axial bearing. Levers are arranged on body outer surfaces directed in opposite directions to support eccentric shaft. Every lever may be driven by eccentric shaft crank. System of bearings is arranged between body and brake support lever. Eccentric shaft crank arranged at shaft end to extend from said body to rotate therein. Revolving eccentric shaft makes crack moving eccentrically relative to body to drive brake support lever. Axial bearing transfers axial forces from brake support lever to body. Axial bearing is located in zone of crank, between brake support lever and body, or part secured thereon. Axial force flow is directed from brake support lever directly to axial bearing and, therefrom, to body, or part secured thereon.

EFFECT: decreased friction.

6 cl, 3 dwg

FIELD: transport.

SUBSTANCE: proposed disk brake block comprises two flanges with appropriate friction linings to allow friction against disk. Said flanges are articulated on ends of two levers driven by brake force source that comprises first piston displacing along first axis A. Brake block comprises also assembly to automatically control the gap between friction linings and said disk. First piston transmits braking force to pusher arranged inside aforesaid source to increase and transmit said force via said assembly and, along second axis B perpendicular to said first axis A, to ends of said levers perpendicular to those where said flanges are articulated with.

EFFECT: higher operating performances.

12 cl, 7 dwg

Vehicle clamp brake // 2429393

FIELD: transport.

SUBSTANCE: brake clamp comprises first braking lever arranged opposite vehicle wheel first friction surface and second braking lever arranged opposite second friction surface. Moving brake shoe is mounted on first braking lever to apply brake force to first friction surface. Brake clamp houses pistons to move moving brake shoe in response to membrane extension and guide frame to guide pistons in direction perpendicular to first friction surface. Moving brake shoe applies uniform brake force to vehicle wheel together with brake shoe secured to second braking lever.

EFFECT: uniform pressure on revolving wheel surface.

13 cl, 12 dwg

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